Possible Clues:

• Not hard for the cartel to organise cheese dish
• Swiss melted cheese dish, often with potatoes and pickles
• Later etc, oddly, for the Swiss dish of melted cheese
• Swiss dish of melted cheese and jacket potatoes
• Semi-soft cheese originally from the Valais region of Switzerland
• Swiss dish of melted cheese served on boiled potatoes
• People eating European food in Switzerland
• Latvian entering competition with Swiss dish
• Nation eating national food